title: Ultrathin BaTiO3 nanowires with high aspect ratio: a simple one-step hydrothermal synthesis and their strong microwave absorption.
abstract: In this paper, we report the facile synthesis of ultrathin barium titanate (BaTiO3) nanowires with gram-level yield via a simple one-step hydrothermal treatment. Our BaTiO3 nanowires have unique features: single crystalline, uniform size distribution and ultra high aspect ratio. The synergistic effects including both Ostwald ripening and cation exchange reaction are responsible for the growth of the ultrathin BaTiO3 nanowires. The microwave absorption capability of the ultrathin BaTiO3 nanowires is improved compared to that of BaTiO3 nanotorus,1 with a maximum reflection loss as high as -24.6 dB at 9.04 GHz and an absorption bandwidth of 2.4 GHz (<-10 dB). Our method has some novel advantages: simple, facile, low cost and high synthesis yield, which might be developed to prepare other ferroelectric nanostructures. The strong microwave absorption property of the ultrathin BaTiO3 nanowires indicates that these nanowires could be used as promising materials for microwave-absorption and stealth camouflage techniques.
authors.affiliation: Department of Materials Science and Advanced Materials Laboratory, Fudan University, Shanghai 200438, P. R. China.
authors.forename: Jin
authors.initials: J
authors.lastname: Yang
authors.forename: Jie
authors.initials: J
authors.lastname: Zhang
authors.forename: Chongyun
authors.initials: C
authors.lastname: Liang
authors.forename: Min
authors.initials: M
authors.lastname: Wang
authors.forename: Pengfei
authors.initials: P
authors.lastname: Zhao
authors.forename: Mengmei
authors.initials: M
authors.lastname: Liu
authors.forename: Jiwei
authors.initials: J
authors.lastname: Liu
authors.forename: Renchao
authors.initials: R
authors.lastname: Che